Optimize the cleanliness, efficiency, and performance of your engine with the professional range of Wynn's Additives. The category is divided into two key sections: the Automotive line, offering specific treatments for diesel, petrol, LPG, engine oil, gearbox oil, and cooling systems for cars; and the Fleet line, featuring large-format packaging ideal for treating tanks, trucks, HGVs, boats, industrial, and agricultural vehicles. Wynn's is the leading choice for preventative maintenance and resolving contamination and performance issues.